Tires

[manduria]

dunlop k70 , Pirelli mt66 , heidenau k34 , ? other? For a xs2 front 3.50*19 rear 4.00*18 , i have founded only that .......

 

[gggGary]

100/90/19 front 110/90/18 rear are widely available and are pretty much direct replacements. I've used dozens of tires in these sizes.

 

[manduria]

100/90/19 front 110/90/18 rear are widely available and are pretty much direct replacements. I've used dozens of tires in these sizes.[/QUOT

100/90/19 front 110/90/18 rear are widely available and are pretty much direct replacements. I've used dozens of tires in these sizes.

3,50 *19 its 110/90/19 no 100/90/19

4,00*18 its 120/90/18 no 110/90/18 , cuna sizes

 

[fredintoon]

4,00*18 its 120/90/18 no 110/90/18 , cuna sizes

Hi manduria,
while my calculator says that 4 inches equals 116 millimetres Gary reckons the best "metric" equivalent tire is 110/90-18.
Yes, a 120/90-18 will also fit on the rear rim and not rub on the swingarm etc.
Mind you, the tire size that will work best for you is not necessarily the one that Gary prefers, eh?

 

[gggGary]

Some good info here

It's not gospel but should give you an idea of "modern" tire / rim selection thinking.
stock front rim 1.85/19
stock rear rim 2.15/18
Lots of guys run "too wide for the rim" tires without dieing, IMHO it degrades handling.
A lot of motorcycle handling knowledge has been gained since the rim widths for the XS650 were spec'd in 1969.
In general you want the tire to not get "too tall" for the rim width.
Short and wide is more stable than tall and skinny, eh?

I should add; my bias is for curvy street riding, if your streets are more like trails or you go off road then certainly tall fat tires help cushion shocks, and protect rims from rocks, potholes, curbs, etc..

 

[grizld1]

Better calibrate your calculator, Fred! 25.4x4=101.6.